OLYMPUS OM ZUIKO 28mm f/2.0 鏡片髒污完全清潔 Cleaning all pieces of glass

這支 OM 28mm f/2.0 的整體鏡況還不錯，不過鏡片有些髒污，入塵不少，也有些薄霧
所以將所有鏡片取出來清潔
這支鏡頭結構比較複雜，後鏡組是浮動鏡組，拆解過程較耗時，組裝時也需要更加小心才不會出錯。

The overall condition of this OM 28/2.0 is good, but there are some dirts, dust and fog on all glasses.
Taking out all pieces of glass of this lens need to pay more effort because OM 28/2.0 incorporate floating elements in its' rear portion.